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Mechanical bowel preparation for elective colorectal surgery: a meta-analysis
Pascal Bucher1, Bernadette Mermillod, Pascal Gervaz
1Clinic of Visceral and Transplantation Surgery, Department of Surgery and Division of Medical Statistics, Geneva University Hospital, Geneva, Switzerland. pascal.bucher@hcuge.ch
Archives of Surgery (Chicago, Ill. : 1960)
|December 22, 2004
Summary
Mechanical bowel preparation (MBP) before colorectal surgery does not reduce septic complications and may increase anastomotic leak risk. Evidence does not support routine MBP use in elective colorectal procedures.
Area of Science:
- Colorectal Surgery
- Surgical Gastroenterology
- Evidence-Based Medicine
Background:
- Mechanical bowel preparation (MBP) is a common practice before elective colorectal surgery.
- The routine use of MBP aims to minimize postoperative septic complications.
- Scientific evidence supporting MBP's efficacy is limited.
Purpose of the Study:
- To evaluate the effectiveness of MBP in reducing septic complications after elective colorectal surgery.
- To assess the impact of MBP on outcomes such as anastomotic leakage and reoperation rates.
Main Methods:
- Systematic review and meta-analysis of prospective randomized clinical trials (RCTs).
- Inclusion criteria: RCTs comparing MBP versus no MBP in elective colorectal surgery.
- Outcomes assessed: anastomotic leakage, infections, reoperations, morbidity, and mortality.
Main Results:
- Seven RCTs involving 1297 patients were analyzed.
- Anastomotic leak rates were significantly higher in the MBP group (5.6%) compared to the no-MBP group (2.8%) (P = .03).
- Rates of intra-abdominal infection, wound infection, and reoperation were higher in the MBP group, though not statistically significant. General morbidity and mortality were also slightly increased.
Conclusions:
- Current evidence does not support the routine use of MBP before elective colorectal surgery.
- MBP may be associated with an increased risk of anastomotic leak.
- MBP does not appear to reduce the incidence of septic complications and may potentially be harmful.